While it’s been established that Hino is somewhat aware of her feelings for Koguma, Koguma has never really recognized her feelings for what they were. Sure, she knows that something keeps her coming back to Hino, despite the harassment, she doesn’t really know what that thing is.
See, I'm with you that this "arc" will cause the two to reassess their relationship or realize their feelings more strongly, but I think you're looking at this backwards. It's not Koguma who is doesn't know her own feelings, it's Hino. We're told that Hino began her little teasing games because she thought that Koguma and her reactions were cute - in fact, not too many chapters back, in one of the very few solo Hino chapters, we see Hino question herself as to why she's continuing to tease Hino because there's something just beyond Koguma being cute - though what that thing is, she doesn't know. And whether or not it's something of an act, Koguma doesn't often seem to grasp the extent or the implications of her teasing.
On the other hand, Koguma has understood those implications very well the whole time - it's why she reacts the way she does with the more lewd or intimate moments, or gets upset when she allows Hino something intimate, but the girl either leaves her hanging, or does something sweet and kind. And only a few chapters ago, we have Koguma all but admitting that she would've wanted Hino to kiss her while she slept.
Since the beginning I've had the impression that it's Koguma who knows just what she feels, and she's only confused/perplexed by Hino's actions/attitudes. Not to mention, Koguma has low self esteem (about her body and anyone being interested), and Hino seems to have her own issues with herself. If this arc will do anything, it'll be to get Hino to maybe see that Koguma feels something for her, or that she feels something special about Koguma. I think Koguma already know how she herself feels.
All that said, I often find that sticking another character (and a childhood friend, no less) really upsets the balance of a manga in a bad way. I hope Omichi doesn't stick around, and if she does, that there isn't a love triangle - imagined by either of our heroines or not.
last edited at Sep 16, 2019 2:17PM